phenanthroline

noun

phe·​nan·​thro·​line
fə̇ˈnan(t)thrəˌlēn,
-lə̇n
plural -s
: any of three crystalline nitrogen bases C12H8N2 related to phenanthrene and derivable from ortho-, meta-, and para-phenylenediamine; di-aza-phenanthrene
especially : the ortho or 1,10-isomer that forms a red coordination complex with ferrous ions useful as an oxidation-reduction indicator (as with potassium permanganate as oxidizing agent) because it becomes faint blue in the oxidized form

Word History

Etymology

International Scientific Vocabulary phenanthr- + quinoline

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Cite this Entry

“Phenanthroline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phenanthroline. Accessed 18 Jul. 2024.

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